It's only Tuesday, but it's already been a major—no, huge—week for the Jenner/Kardashian clan. The “Call Me Caitlyn” Vanity Fair cover broke the Internet yesterday, Kim announced her pregnancy with baby number two (baby...

Makeup and nail polish have it easy: Mess them up and one swipe of remover makes the mistake disappear. But screw up your hair and you're back to the shower (or the topknot—for the third day in a row). We asked top hairstylists how to get your routine right, every single time.

Thin hair is something you're born with, and while it's not exactly va-va-voom, its worst offense is probably falling flat by lunchtime. Thinning hair, however, is a bit more alarming—and by about age 50, half of us will have noticed hair loss. But there are styling tricks and products that can plump and thicken the hair you're born with and the hair you're left with. In the immortal words of Hans and Franz: The right volumizers will pump you up.